Self-extinguishing lamp



W. H. KIM'BAL L. sE LP EXTINGUISHING LAMP.

(No Model.)

Patented Dec. 11,,1 8 83.

llnirnn STATES PATENT tries...

SELF-EXTINGUISHING LAMP.

SPZCIFICATION forming part of Letters Patent No. 289,843, dated December11, 1858 Application filed February 1, 1883. (N0 model.)

To all whom, it may concern Be it known that I, XVILLIAM H. KIMBALL, ofBoston, inthe county of Suffolk and State of Massachusetts, haveinvented new and useful Improvements in Self Extinguishing Lamps, ofwhich the following is a specification.

The object of my invention is to provide a cheap, simple, convenient,and efficient selfextinguishing lamp for street-lighting purposes, whereby the light may be automatically extinguished, or go out, afterburning apiedetermined number of hours from the time when lighted-saytwo, four, six, eight, or ten hours, more or less, as desired-whenarranged at the time of lighting each day and with once filling of thereservoir sufficient to last aweek and burn the desired time each night;and it consists in the construction, combination, and arrangement of theseveralparts of the apparatus, as hereinafter more fully described, andset forth in the claims.

Figure 1 represents a perspective view of a self-extinguishing lamp andlantern constructed according to my invention. Fig. 2 represents avertical sectional elevation of the same. a A represents the sides ofastreet-lantern, of usual construction, being formed of glass set into asuitable metallic frame, one side being provided with a hinged door topermit access to the interior of the lantern to light, trim, or regulatethe burner of usual construction, provided upon the lamp or reservoir B;and in order that the light and interior of the lantern may be suppliedwith a suitable amount of air to sustain combustion and prevent undueheat being generated within the lantern, I have provided within thebottom thereof a series of openings provided with a shield, forming aconduit, G, whereby the air is admitted without the sudden rush orincreased currents, as usually the case when the wind blows hard, orwith sudden gusts, liable to extinguish the light or cause it to smoke,v

the said conduits 0 being formed with an interior opening or passage forthe air to enter therein, much smaller than their outlet into thelantern, and the main body of still larger diameter, so as to form adead-air space of sufficient length and capacity to check the suddenrush of air through the. inlets D,wherehours when lighted, and becomeautomatically extinguished at the desired time, I have providedthelamp-reservoir B with a series of horizontal circumferentialgraduation-marks, indicated with certain numerals, as a guide and gageto be observed by the attendant when filling such reservoir. Thequantity of oil, as indicated by the said marks and numbers 4;, 6, 8,and 10, would Supply the burner Such number of hours, when the oil wouldburn out, and consequently the light would become extin guished; and asthe quantity of oil consumed by a number of such lamps would be veryinconvenient to be supplied at the time of lighting, and wouldnecessarily occupy too much time, it is desirable that the lamps-shouldbe filled and prepared for lighting during the day, and when the desiredtime for lighting arrives that they be lighted in the various streetsexpeditiously. I have provided an elevated fountain, F, upon the upperportion of the lantern, extending around the exterior of the conical topG, which is provided internally as a deflector or reflector, so as tothrow the light downward. This fountain F may be constructed with acapacity sufficient to contain oil enough to supply the burner thedesired number of hours each night for a week, and, being so arrangedand located, does not obscure the light or render the lanternobjectionable in appearance, but, being uniform upon all sides of thelantern, renders the same more ornamental than otherwise.-

Now, in order to supply the lamp-reservoir B with the exact amount orquantity of oil to burn the desired number of hours each night, Iconnect a small vertical tube, H, with the said elevated fountain F, andleading into the top of the said lamp-reservoir B, and provide the saidtube H with astop-cock, L, whereby the attendant, when ready to lightthe lantern 'for the night, turns the said stopcock, so as to permit theoil to descend from the said fountain F into the lamp-reservoir B, so asto fill the same up to the indicated point, or sufficient to burn thelength of time desired, or

2 asaeaa number of hours required to keep the light burning to lightsuch street or adjacent place until daylight, or until no longer needed.Such quantity of oil having been consumed, the light will die out at thedesired time without the labor of an attendant to extinguish the same.

I am well aware that heretofore street-lanterns have been provided withan elevated oilreservoir and an auxiliary graduated reservoir or measureconnected therewith and with the-lamp by a conducting-pipe having astopcock, whereby the desired supply of oil to burn one night may bedrawn from the upper reservoir into the graduated measure or auxiliaryreservoir, and then from that into the lamp beneath, thus requiring twooperations to supply the lamp with the quantity of oil to burn severalhours or one night. Therefore I do not broadly claim such combination ofdevices, but limit my invention to the construction and arrangement ofthe graduated lamp with a pipe connecting the same direct with the mainreservoir, as above described and shown.

Having thus described my invention, what I claim is 1. The combinationand arrangement of the lamp B, having vertical graduated sides adaptedto indicate the desired quantity of oil to be put therein for thepurposes described, with 30 the manner shown and described, as and for35 the purposes set forth.

2. The combination, with a street-lantern, of the conduits C, arrangedto conduct and check the currents of air passing into the lantern,substantially as shown and described, as 40 and for the purposes setforth.

3. As an improved article of manufacture, a transparent lamp-founthaving vertical sides provided with a graduated scale adapted toindicate the desired quantity of oil to be put 4.5

therein, whereby the said lamp may serve a double purpose, substantiallyas described and shown, as and for the purposes set forth.

\VILLIAM H. KlMB-ALL.

\Vitnesses:

SYLvnNUs WVALKER, Guns. S. GooDrNc.

